Wall-bond.



A. 0. THOMAS.

WALL BOND.

APPLICATION FlLED mm. 12, 1911.

Patented May 6, 1919.

INVENTOR Av iZaQTfiamaa WITNESSES:

A TTORNEY A VILA THOMAS, 013 DETROIT, MICHIGAN.

. WALL-BOND.

Specification of Letters Patent.

Patented May 6, 1919.

Application fiel d March 12,1917. Serial No.154,105.

To all whom it may concern:

Be it known that I, AVILA O. THOMAS, a citizen of the United States,residing at Detroit, in the county of Wayne and State of Michigan, haveinvented a new and useful Wall-Bond, of which the following is aspecification.

This invention relates to tie members for building blocks and its objectis to provide a tie member particularly adapted to establish andmaintain the proper degree of rigidity in a wall comprised of two-partblocks such as is disclosed in my co-pending application, Serial Number154106.

More specifically related, it is the object of the invention to providea tie member, comprised of two relatively adjustable members, which,after being engaged with two blocks or tiles, may be adjusted to andlocked in an angular relation so as to create a sufficient tensilestress in the tie member to hold the blocks firmly .in a desiredrelation.

An exemplificaton of the novel means provided for accomplishing theaforesaid object is illustrated in the accompanying drawings, wherein,

F igurel is a perspective view of the tie member, showing the partsthereof adjusted in their tension-producing position and showing alsothe fasteners with which the extremities of the tie member areengageable.

Fig. 2 is a top view of the tie member, showing the relative position ofthe parts thereof when first extended between two tiles. 1 V

F ig.3 is an elevation view of the same, the tension-producingpositionof the parts being shown in dashed lines. l

Fig. & is a horizontal sectlonal view showing a tile wall constructionwherein the herein-described invention is employed.

Referring now more particularly to the drawings, wherein like referencecharacters designate similar parts in all the views, 1 denotes twoduplicate metal bars having overlapping end portions through which thereis centrally passed a loose rivet 2, or equivalent pivotal connection.This connection not only allows a relative angular motion of the bars 1,but also permits the overlapping portions to assume a slightly spacedrelation, as may be clearly seen m Fig. 2. Between its pivotal p'omt andits adjacent extremity, each bar 1 is formed with a flange 3 extendingat an acute angle to the longitudinal edges. When the two bars, are inalinement, -or nearly so, the flanges 3 bear respectively upon theopposed over-lapping portions and maintain between sald portions aninterval of space somewhat greater than the connection2 readily permrts.Consequently when the bars 1 are shifted to permit the flanges 3 toclear the side faces of the bars said flanges will each snap intoengagement with an edge face of the opposing bar, thus forming aninterlock prohibiting return of the two bars to an; alined relation. If,therefore, the tie member has its parts substantially in alinement whentheir outer ends are engaged with two bodies or structures to beconnected bysaid member, and subsequently the bars 1 are adjusted totheir relative positions disclosed in Fig. 1, it is evident that thedistance between the tie extremities will be decreased,

and there will result a tensional stress in j the tie member that willgive rigidity to the connection.

, While a tie member such as has been described has numerousapplications, it is intended primarily to be employed in a wallconstruction, and more especially in a wall constructed of two parttiles which is the subject matter of my copending application, SerialNumber 154,106.

Referring now to Fig. 4, illustrating this application of my invention,4 is a tile formed of any suitable cementitious ma terial and 5 are ribsextending parallel to the endsof the tile and set back respectivelytherefrom. One or more ribs 6 extend longitudinally of the tile, theheight thereof being I uniformly increased from the ribs 5 to anintermediate point 6' whereat the height of of said tiles injuxtaposition with the ribs 5 and 6 abutting, a composite hollow blockis formed, and when a number of said blocks are arranged in a row, theribs 5 adjacent each transverse point together with the abutting endportions of the tiles form a rectangular opening 7. At the corners ofthis opening there are partially embedded in the respective tilesU-shaped brackets 8, the loops thereof projecting and the legs havingbent ends 8 to increase the anchorage. These brackets form diagonallyopposed pairs, each of which pairs is engaged with hooks 9 formed uponthe extremities of one of the previously described tie members. Thelength of the tie members is so propor tioned with respect to thedistance between the brackets to be engaged thereby that the tie membersmay be readily engaged with said brackets while the bars 1 are inalinement, but subsequent to adjustment of said bars to their angularinterlocking relationa considerable tensile stress will be created thatwill hold the four tiles meeting at the joint infirm abutment, V

The openings 7 may be filled with concrete as indicated at 10 in Fig. 4.Vertically extending reinforcing rods 11 are also shown embedded in theconcrete 10, and engaged with tongues 12, respectively struck but fromthe outer end portions of the bars 1. By this arrangement said bars areheld in their proper positions while'the concrete is being poured, and abond is established between the rods 11 and tie members so that stressesmay be transmitted from one to the other.

The adjustment of the tie members may be readily effected by exertingupward pressure upon said members below the pivotal point thereof,ahooked implement (not shown) being well adapted for applying suchpressure. It will of course be understood that the concrete filling willnot be introduced into the openings 7 until all of the tie members havebeen adjusted to tensilely stress thesame.

The invention is presented as including all such changes andmodifications as properly come within the scope of the following claims.

What I claim is:

1. A tie member comprising two bars and a pivot member connecting endportions of said bars, said pivot member being axially dimensionedtopermit the bars to assume a spaced relation and projections from theIQSPQCtlV-B-COIIHGCtGd611d portions of the bars engageable between saidportions when the bars are in substantial alinement and coac'ting' tomaintain amaximum space intervalibetween the bars, each of said barshaving an edge engageable by the projection from the other bar uponestablishment of an angular relation between the bars such as to shiftsaid projections from between the same, and thereby permit a decrease ofthe intervening space interval.

2. A tie member comprising two bars and a pivot member connecting endportions of said bars, said pivot member being axially dimensioned topermit the bars to assume a spaced relation, and flanges formed integralwith the respective connected end portions of the bars, engageablebetween said portions when the bars are in substantial alinement andco-actingto maintain a maximum space interval between the bars, each ofsaid bars having an edge engageable by the flange from the other barupon establishment of an angular relation between the bars such as toshift said projections from between the same, and thereby permit adecrease of the intervening space interval.

3. A tie member comprising two bars and a pivot member connecting end)ortions of said bars, said pivot member being axially dimensioned topermit the bars to assume a spaced relation, and flanges formed integralwith the respective connected end portions of the bars, extendingsymmetrically to the pivot member and at an acute angle to thelongitudinal edges of the bars, said flanges being engageablebetween theconnected end portions when the bars are in substantial alinement and coacting under such conditions to maintain a maximum space intervalbetween the bars, each of said bars having an edge eng'ageable. theflange of the other bar upon establishment of an angular relationbetween the bars such as to shift said projections from between thesame, and thereby permit a decrease of the intervening space interval.

In testimony whereof I sign this specification.

AVILA O. THOMAS.

Gripj'cs or this patent may he. obtained for five cents each, byaddressing the qon niisli oner of Patents,

' welhinzton, D. (3."

